Vulnerability · Published Nov 5, 2026 · Assigned by GitHub_M

CVE-2026-88986Kubeflow Pipelines: Reflected XSS in the frontend pod information and events error responses

Medium 6.1

In plain English

A medium-severity cross-site scripting in pipelines from kubeflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.3%top 79.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Kubeflow Pipelines enables users to build and deploy portable, scalable machine learning workflows. Prior to 2.15.0, the frontend routes /pipeline/k8s/pod and /pipeline/k8s/pod/events use frontend/server/k8s-helper.ts to include untrusted podname and podnamespace query values and backend error details in HTML-capable error responses. An unauthenticated attacker can craft a link that executes JavaScript in the frontend origin when a user who satisfies the deployment's authentication and route-access requirements follows it and reaches an affected response. Cookie disclosure depends on cookie attributes, and server-side code execution or availability impact is not established. This issue is fixed in version 2.15.0.

Affected products (as reported)

Vendor	Product	Versions
kubeflow	pipelines	< 2.15.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

https://github.com/kubeflow/pipelines/security/advisories/GHSA-g3qx-frcg-j979 x_refsource_CONFIRM
https://github.com/kubeflow/pipelines/pull/12295 x_refsource_MISC
https://github.com/kubeflow/pipelines/commit/fedc25e3f7251933d4a37b964bc3e8176beea28e x_refsource_MISC
https://github.com/kubeflow/pipelines/releases/tag/2.15.0 x_refsource_MISC